Minerals

Card Set Information

Author:
dbernal
ID:
183359
Filename:
Minerals
Updated:
2012-11-13 00:52:32
Tags:
GEOL315
Folders:

Description:
Mineralogy Mineral ID Test
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  1. Calcite
    • CaCO
    • Trigonal hexagonal 32/m
    • Color: colorless or white, also gray, yellow green
    • Habit: Crystalline, granular
    • Luster: Vitreous to pearly
    • Harness: 3
    • Uniaxial


  2. Azurite
    Cu3(CO3)2(OH)2

    • Monoclinic
    • Color: dark, royal blue
    • Habit: Prismatic, tabular
    • Luster: vitreous
    • Hardness: 3.5 to 4
    • Biaxial (+)

  3. Magnetite
    Fe3O4

    • Isometric 4/m 3 2/m
    • Color: Balck, gray
    • Habit: Octahedral, fine granular to massive
    • Luster: metallic
    • Hardness: 5.5 -6.5
    • Streak: black

  4. Olivine
    • (Mg, Fe)2SiO4
    • Orthohombic
    • Color: yellow to yelllow-green
    • Habit: massive to granular
    • Luster: vitreous
    • Streak: white
    • Hardness: 6.5-7
    • Biaxial (+)

  5. Quartz
    SiO2

    • Trigonal
    • Color: colorless to black
    • Habit: drusy, fine-grained to microcrystalline, massive
    • Luster: vitreous- wazy to dull when massive
    • Streak: white
    • Hardness: 7
    • Uniaxial (+)
  6. Orthoclase (k-feldspar)
    KAlSi3O8

    • Monoclinic (2/m)
    • Color: Colorless, green/grey, yellow, white pink
    • Habit: anhedral or euhedral; tabular
    • Luster: Vitreous, pearly on cleavage surfaces
    • Streak: white
    • Hardness: 6
    • Biaxial (-)

  7. Ulexite
    NaCaB5O6(OH)5(H2O)

    • Triclinic
    • Color: colorless to white
    • Habit: acicular to fibrous
    • Luster: vitreous, silky or satiny in fibrous aggregates
    • Streak: white
    • Hardness: 2.5
    • Biaxial (+)

  8. Cinnabar
    HgS

    • Trigonal
    • Color: red, toward brown and lead-gray
    • Habit: Rhombohedral to tabular
    • Luster: admantine to dull
    • Streak: scarlet
    • Hardness: 2-2.5
    • Uniaxial (+)

  9. Diopside
    MgCaSi2O6

    • Monoclinic 2/m
    • Color: light to dark green
    • Habit: short prismatic crystals, may be granular, columnar, massive
    • Luster: vitreous to dull
    • Streak: white
    • Harness: 5.5 -6.5
    • Biaxial (+)

  10. Wollastonite
    Ca2Si2O6?

    • Triclinic
    • Color: white, colorless to grey
    • Habit: lamellar, radiating, compacy and fibrous aggregates
    • Luster: vitreous or dull to pearly on cleavage surfaces
    • Streak: white
    • Hardness: 4.5 to 5.0
    • Biaxial (-)

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